We started homeschooling for basically the same reason. It's been a great experience for our family.
In first grade, my son had to read Judy Moody. (At home, he was reading Harry Potter.) He was asked, "what do you think of this book." His response was that everything in the book was very obvious and required no further thought. The teacher was EXTREMELY offended by his comments.
We recently read The Giver at home (not a book he would choose on his own) and he had tons of constructive analysis. I guess it just turns out that the material has to be stimulating and isn't dependant on whether or not he likes the story itself. I wish teachers would understand that about gifted children.
I wish you lots of luck whether you choose to stay in school or come home.
